The utility model provides a graphite alkene sewage filter, it relates to sewage treatment technical field, it contains barrel, graphite alkene adsorbed layer, last tray, lower tray, piston rod, pneumatic cylinder, filtration water inlet, drain, filtration delivery port, back flush water inlet, the barrel in be provided with graphite alkene adsorbed layer, the upper and lower surface of graphite alkene adsorbed layer is provided with tray and tray down respectively, the center of barrel is provided with the piston rod, the piston rod upper end is connected with the pneumatic cylinder, the bottom of barrel be provided with and filter water inlet and drain, the top of barrel is provided with filters delivery port and back flush water inlet, graphite alkene adsorbed layer constitute by graphite alkene and high -molecular polymer, be equipped with graphite alkene in the high -molecular polymer. A graphite alkene sewage filter, adsorption capacity is big, to adsorbing heavy metal ion mercury, but the regeneration of graphite alkene, use cost is low, the utility model has the advantages of simple structure, set up reasonable, the cost of manufacture low.